30643012 has 6 divisors (see below), whose sum is σ = 53625278. Its totient is φ = 15321504.

The previous prime is 30642929. The next prime is 30643021. The reversal of 30643012 is 21034603.

It can be written as a sum of positive squares in only one way, i.e., 29419776 + 1223236 = 5424^2 + 1106^2 .

It is a super-3 number, since 3×30643012³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3830373 + ... + 3830380.

Almost surely, 2^30643012 is an apocalyptic number.

It is an amenable number.

30643012 is a deficient number, since it is larger than the sum of its proper divisors (22982266).

30643012 is a wasteful number, since it uses less digits than its factorization.

30643012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7660757 (or 7660755 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 30643012 is about 5535.6130645124. The cubic root of 30643012 is about 312.9275623692.

Adding to 30643012 its reverse (21034603), we get a palindrome (51677615).

The spelling of 30643012 in words is "thirty million, six hundred forty-three thousand, twelve".